Two- or four-pipe heating and/or cooling systems are characterized by changing conditions due to valves opening and closing depending on the need for heating or cooling. This continuously causes flow and differential pressure changes.

Without proper measurements, such systems suffer from uneven heat distribution, poor energy inefficiency and are very difficult to commission.

By adding an actuator, the valves function as flow-limited control valves, automatically balancing the system and providing the best possible indoor comfort and energy efficiency. The commissioning of the system is a lot easier, all valves only need to be set to the design flow before the actuators are mounted.

Danfoss offers a broad range of pressure-independent balancing and control valves and matching actuators.

Features and benefits

Stable room temperature

Eliminating the overflow situations at partial load conditions has a significant effect on the stability of the room temperature

Improved indoor comfort

With the stable room temperature, the indoor comfort increases. Required temperatures are accurately met, increasing the productivity of office employees or benefitting the experience of hotel guests.

Energy savings

The perfectly balanced system, under all conditions, increases the energy efficiency and leads to savings on energy costs.

Reduced maintenance costs

As the pressure-independent valves ensure perfect working conditions, the actuators mounted on them require fewer movements to keep the temperature stable. This increases the lifetime value of the actuators and reduces the maintenance costs.

AB-QM 4.0: We created PICVs - now we redefine the value

Coming soon: AB-QM 4.0

Get ready for the next level value of your PICV designs.

Product range

  • Danfoss AB-QM 4.0 pressure-independent control valve (PICV) for hydronic balancing
    AB-QM 4.0 Pressure Independent Control Valves (PICV)

    AB-QM 4.0 Pressure Independent Control Valves (PICVs) are the successor of Danfoss AB-QM. They offer best-in-class specifications and easy installation. The scaling- and clogging resistant design secures and outstanding reliability and long lifetime. They fit to the NovoCon S digital actuators. This enables HVAC data collection for e.g. remote commissioning and predictive maintenance, resulting in a lower Total Cost of Ownership.

  • AB-QM- Danfoss
    AB-QM

    AB-QM Pressure Independent balancing and Control Valves (PICV) provide both a control functionality and dynamic balancing solution for HVAC heating and cooling systems. PICVs are designed for various types of terminal units and provide high indoor comfort and energy efficiency in public and commercial buildings.

Documents

Type Name Language Valid for Updated Download File type
Data sheet AB-QM, DN 10-250 English Multiple 19 Jun, 2018 3.5 MB .pdf
Brochure Energy saving solutions for renovation of heating and cooling systems English Multiple 09 Sep, 2014 5.8 MB .pdf
Brochure Grow your business and discover the value of working with one partner (International version) English Multiple 18 Nov, 2015 5.6 MB .pdf
Application guide HVAC Application guide English Multiple 09 Oct, 2014 7.5 MB .pdf
Brochure Hydronic Balancing & Control product overview English United Kingdom 10 Nov, 2014 7.1 MB .pdf
Brochure Hydronic Balancing & Control product overview English Multiple 11 Dec, 2016 1.1 MB .pdf

Tender texts

ABNM A5 – Thermic Actuators

Modulating thermal actuator used to control pressure independent balancing and control valves DN 10-32.

  • Control signal: 0-10 V
  • Valve stroke detection
  • Power consumption: 1 W standby
    LOG(LIN*) characteristic
  • Halogen free cable: plug-in; 1 m (5 m and 10 m)
  • IP class: 54
  • Normally closed (open**) when de-energized
  • First open function (normally closed variant)
  • Visible stroke indicator
  • Stroke: 5(6.5 mm***)
  • Supply Voltage: 24 V AC, 50/60 Hz (24 V DC****)

*LIN variant available
**normally open variant available
***6.5 mm variant available
****24 V DC variant available

TWA-Z – Thermic Actuator

On/off thermal actuator used to control pressure independent balancing and control valves DN 10-32.

  • Supply Voltage: 24 V AC/DC (230 V 50/60 Hz*)
  • Height: 60 mm from valve adapter
  • Cables: PVC (halogen free**) 1.2 m (5 m and 10 m)
  • Normally closed (open***) when de-energized
  • First open function (normally closed variant)
  • Visible stroke indicator
  • Power consumption: 2 W standby

*230 V varriant
**halogen free cables available only for normally closed variant
***normally open variant available

AME 435QM – For Modulating Control

The actuators AME 435 QM for modulating control is used with pressure independent balancing and control valve type AB-QM from DN 40 to DN 100.

  • Actuator shall have LED signalization
  • Actuator shall be able to mount/dismount on/off the valve without any tools needed
  • Actuator shall have efficiency improving and energy saving anti-oscillation function
  • Actuator shall have external reset/stand-by button
  • Easy electrical connection, snap on/of connection
AME 55QM – Push / Pull Actuators for Larger AB-QM

The actuator AME 55 QM is used with pressure independent balancing and control large valve type AB-QM DN 125 and DN 150.

  • Actuator shall have LED signalization
  • Actuator shall be able to capture operational data
  • Actuator shall have possibility to be modulating or 3-p controlled
  • Actuator shall have reset option
AME 85QM – Push / Pull Actuators for Larger AB-QM

AME 85QM actuator is used together with large pressure independent balancing and control valves type AB-QM DN 200 and DN 250.

  • Actuator shall have LED signalization
  • Actuator shall have possibility to be modulating or 3-p controlled
  • Actuator shall have reset button

Drawings

Software

Danfoss C.H. software

Danfoss C.H. software

Our advanced Danfoss C.H. software will help you to design and calculate the perfect heating or cooling installation with Danfoss products.

Related products

  • Actuators for PICVs- Danfoss
    Actuators for PICVs

    To take advantage of the combined balancing and control features of Danfoss AB-QM it has to be equipped with actuators controlled by room thermostats or a Building Management System. Danfoss offers a broad range of actuators varying from thermal on-off to geared digital actuators with bus communication.

  • NovoCon® S Digital Actuator- Danfoss
    NovoCon® Digital actuators

    With NovoCon® Danfoss revolutionizes the way hydronic balancing and HVAC control work together. The first of its kind digital HVAC actuators are directly connected with a Building Management System (BMS). This enables System Integrators to design state-of-art, Internet of Things (IoT) solutions.

Case studies

  • Danfoss contributes to smart HVAC control solution for I-tower at WTC Amsterdam
    Smart HVAC control solution for the I-tower at WTC Amsterdam, the Netherlands

    Building: Office
    Application: Climate panels with a four-pipe change-over system for Heating and Cooling
    Challenge: Establish a modern, innovative HVAC control system optimized for flexibility in (changing) usage of office space
    Solution: Integration of Danfoss field devices with the Building Management System via BACnet bus-communication

  • High-end climate solutions in Waldorf Astoria by Hilton, Amsterdam, the Netherlands

    Building: Hotel
    Application: Hydronic balancing and control for radiator heating and fan coil cooling
    Challenge: Establish top level comfort and minimum energy consumption for heating and cooling
    Solution: Fan-coil units for cooling; 8 heating risers and radiators equipped with Danfoss products.

  • HVAC control at Katowice business centre, Poland

    Katowice Business Centre is a modern office building where Danfoss hydronic balancing solutions are used; AB-QM balancing and control valves in combination with revolutionary NovoCon® actuators.

  • Energy comfort in Prime Tower, Zurich, Switzerland

    The Prime Tower in Zurich is a building of many records. With its 126 meters it is the tallest building in Switzerland with 36 floors and 40,000 square meters accommodating mostly offices. And with its more than 6,000 AB-QM valves it is also one of the biggest heating and cooling installations ever designed and installed by Danfoss.

  • Hydronic balancing in SAMBA bank head office, Riyadh, Saudi Arabia

    At the heart of the new King Abdullah Financial District in Riyadh, Saudi Arabia, stands the impressive SAMBA head office. The 40-storey building represents a landmark in sustainable architecture and engineering and forms an attractive work space for the 800 people working in the SAMBA Financial Group head office.

  • Floreasca Park: Danfoss PICV solution offers the perfect balance in the greenest office building in Bucharest, Romania

    The award-winning office complex Floreasca Park raises the bar for green office buildings. With 40% savings on the energy bill, Floreasca Park brings substantial savings to the tenants and a green footprint to the building. The new office complex, Floreasca Park in Romania, serves as an excellent example of a sustainable office building according to the international BREEAM rating.